The release of vSphere 5.5 announces the following guest operating system releases are no longer supported:

CentOS 4.5-4.8

CentOS 5.0-5.5

CentOS 6.0

Debian 5.0.x

Debian 4.0

FreeBSD 6.x

Netware

OS/2 Warp

Oracle Linux 4.5-4.8

Oracle Linux 5.0-5.5

Oracle Linux 6.0

Red Hat Enterprise Linux 2.1

Red Hat Enterprise Linux 4.5-4.8

Red Hat Enterprise Linux 5.2-5.5

Red Hat Enterprise Linux 6.0

SUSE Linux Enterprise 11 SP0

SUSE Linux Enterprise 10 SP0, 10 SP1 and 10 SP2

SUSE Linux Enterprise 9 SP0, 9 SP1, 9 SP2 and 9 SP3

SUSE Linux Enterprise 8 SP3 and 8 SP4

Ubuntu 10.10, 9.10, 9.04, 8.10 and 8.04.x

Windows NT

All 16-bit Windows releases (Windows 98, Window 95 and Microsoft DOS)

If you are currently running a guest operating system that is at the Terminated support level, VMware recommends moving to a newer release immediately. VMware support does not provide assistance with any issues relating to this operating system release. More information on support levels are available at http://kb.vmware.com/kb/2015161